Build a budget database

hi all my first post.

i would like your expertees on if this is possible for a noob like me to do relative easy or to just forget about.

im hoping to build a budget database so i can track my bills, debits and see where all my money goes. When i open my budget doc i want a screen so that i can put in how much i spent and on what and the date, ect ( £16, electric, 12/05/2012 then hit enter .) then when i hit enter it will send the information to an Excel doc. But every month i want it to open a new doc and save it in a folder.I will have a June doc, July doc etc. Thanks